The Roman wall between the friths of the Clyde and Forth, so called from the first person who leaped over it after the Romans left Britain.

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This wall defended the Britons for a time, but the Scots and Picts assembled themselves in great numbers, and climbed over it . A man named Grahame is said to have been the first soldier who got over, and the common people still call the remains of the wall Grahames Dike.Sir Walter Scott: Tales of a Grandfather.